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Do you know who Krampus is? Here's everything you need to know about the Christmas demon who comes to punish naughty children every winter.

From holiday cameos in popular TV series to starring roles in Hollywood movies, the Alpine Yuletide lord known as Krampus has become a pop icon.

Krampus has gained popularity across the seas. Check out this list of 10 completely different Krampus celebrations throughout the United States.